Purification and Characterization of Oxygen-Evolving Photosystem II Core Complexes from the Green Alga Chlamydomonas reinhardtii
- 13 September 1994
- journal article
- research article
- Published by American Chemical Society (ACS) in Biochemistry
- Vol. 33 (36) , 10906-10910
- https://doi.org/10.1021/bi00202a009
Abstract
Oxygen-evolving photosystem II complexes were isolated from the green alga Chlamydomonas reinhardtii by selective solubilization of thylakoid membranes with dodecyl maltoside followed by density gradient centrifugation and anion-exchange chromatography. In the presence of CaCl2 and K3[Fe(CN)6] the complexes evolved oxygen at rates exceeding 1000 mumol (mg of chl)-1 h-1. The particles contained 40 chlorophylls a and had properties very similar to those of PSII isolated from higher plants. Chlamydomonas reinhardtii is now the first organism which can be used for both site-directed mutagenesis and detailed biochemical and biophysical characterization of oxygen-evolving photosystem II. It seems therefore to be an ideal model organism for investigation of structure-function relationships in photosynthetic oxygen evolution.Keywords
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